Composite energy-saving furnace lining of white corundum smelting furnace

Abstract

The utility model discloses a composite energy-saving furnace lining of a white corundum smelting furnace, which comprises a smelting furnace seat, a smelting furnace mechanism is arranged at the top of the smelting furnace seat in a rolling manner, and a furnace lining component is arranged in an inner cavity of the smelting furnace mechanism; the smelting furnace seat comprises a base. A clay heat preservation ring of a composite energy-saving furnace lining in the furnace lining assembly is tightly coupled with and tightly attached to a hearth, the good heat preservation performance of the clay heat preservation ring is matched, outward heat dissipation is effectively reduced, and energy consumption is reduced. The ceramic fiber ring is connected with the clay heat preservation ring through sintering, the structure is stable, the wedge-shaped grooves in the inner side not only enlarge the area of the inner wall of the furnace, enlarge the heat exchange area and improve the smelting efficiency, but also cooperate with the infrared reflection coating to reflect radiant heat, and energy is further saved. The adjacent composite energy-saving furnace linings are coupled through the convex cylinders and the cylindrical grooves, so that disassembly, assembly and maintenance are convenient. The smelting furnace seat is matched with the motor to roll the hearth, so that materials are uniformly heated, and the smelting quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of furnace lining technology for smelting furnaces, specifically to a composite energy-saving furnace lining for white corundum smelting furnaces. Background Technology

[0002] In the field of white fused alumina smelting, the performance of the furnace lining has a crucial impact on smelting efficiency, energy consumption, and furnace lifespan. Traditional white fused alumina smelting furnace linings often employ a single material or a simple composite structure, which has numerous drawbacks. For example, single-material linings often struggle to simultaneously achieve multiple properties such as heat insulation, wear resistance, and high-temperature resistance, leading to wear, cracking, and even detachment during high-temperature smelting. This not only affects the stability of the furnace temperature but also causes fluctuations in smelting quality. Furthermore, traditional linings perform poorly in terms of heat reflection and heat exchange, resulting in significant heat loss from the furnace to the outside environment and energy waste. Therefore, those skilled in the art propose a composite energy-saving lining solution for white fused alumina smelting furnaces. Utility Model Content

[0003] The purpose of this utility model is to provide a technical solution for a composite energy-saving furnace lining for white corundum smelting furnaces, thereby addressing the shortcomings mentioned in the background art. To overcome the drawbacks and defects described in the background art, this technical solution includes the following:

[0004] It includes a smelting furnace base, a smelting furnace mechanism is slidably mounted on the top of the smelting furnace base, and a furnace lining assembly is provided in the inner cavity of the smelting furnace mechanism;

[0005] The furnace base includes a base, an electric motor fixedly connected to the right side of the upper surface of the base, and a front bracket and a rear bracket of the furnace body fixed to the left and right sides of the upper surface of the base.

[0006] The smelting furnace mechanism includes a furnace chamber, a front furnace cover fixed to the left end face of the furnace chamber, and a rear pressure cover fixed to the right end face of the furnace chamber.

[0007] The furnace lining assembly comprises 8-12 composite energy-saving furnace linings, each of which includes a clay insulation ring, a ceramic fiber ring fixedly connected to the inner cavity sidewall of the clay insulation ring, and 3-5 wedge-shaped grooves arranged in a linear array on the inner sidewall of the ceramic fiber ring. The inner sidewall of the ceramic fiber ring and the inner cavity sidewall of the wedge-shaped groove are coated with an infrared reflective coating with a thickness of 0.3mm-0.5mm.

[0008] As a preferred embodiment of this utility model: the clay insulation rings are in close contact with each other, and the outer surface of the clay insulation rings is tightly coupled to the inner cavity sidewall of the furnace.

[0009] As a preferred embodiment of this utility model, the outer ring sidewall of the ceramic fiber ring and the inner cavity sidewall of the clay insulation ring are connected by a sintering process.

[0010] As a preferred embodiment of this utility model, the wedge-shaped grooves are interconnected, and the vertical cross-section of the wedge-shaped grooves is wavy, which is used to increase the inner wall area of ​​the furnace to increase the heat exchange area.

[0011] As a preferred embodiment of this utility model: 8-10 convex cylinders are fixed on the right end face of the ceramic fiber ring, and the convex cylinders are arranged in a ring array with the axis of the ceramic fiber ring as the base point.

[0012] As a preferred embodiment of this utility model: 8-10 cylindrical grooves arranged in a ring array are provided on the left end face of the ceramic fiber ring, and the convex cylinder is inserted and coupled into the interior of the cylindrical groove.

[0013] As a preferred embodiment of this utility model: the output shaft of the motor is connected to the access end of the rear bracket of the furnace body via a coupling, and is used to drive the furnace to rotate.

[0014] As a preferred embodiment of this utility model: a rolling wheel ring is fixedly connected to the outer surface of the furnace chamber, and the rolling wheel ring is mounted on the front bracket and the rear bracket of the furnace body.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] In the furnace lining assembly, the clay insulation ring of the composite energy-saving furnace lining is tightly coupled and adheres closely to the furnace chamber. Combined with its excellent insulation performance, this effectively reduces heat loss and lowers energy consumption. The ceramic fiber ring is sintered and connected to the clay insulation ring, resulting in a stable structure. Its inner wedge-shaped grooves not only increase the furnace wall area and heat exchange area, improving smelting efficiency, but also work in conjunction with the infrared reflective coating to reflect radiant heat, further saving energy. Adjacent composite energy-saving furnace liners are coupled via convex cylinders and cylindrical grooves, facilitating disassembly and maintenance. The furnace base, in conjunction with an electric motor, causes the furnace chamber to rotate, promoting uniform heating of materials and improving smelting quality. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure of the smelting furnace;

[0019] Figure 2This is a schematic diagram of the furnace base for a smelting furnace;

[0020] Figure 3 This is a cross-sectional view of the furnace body;

[0021] Figure 4 This is a schematic diagram of the composite energy-saving furnace lining assembly.

[0022] Figure 5 This is a partial exploded view of the composite energy-saving furnace lining.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Smelting furnace base; 11. Base; 12. Front support bracket of furnace body; 13. Rear support bracket of furnace body; 14. Electric motor; 2. Smelting furnace mechanism; 21. Furnace chamber; 22. Front furnace cover; 23. Rear pressure cover; 3. Composite energy-saving furnace lining; 31. Clay insulation ring; 32. Ceramic fiber ring; 33. Convex cylinder; 34. Columnar groove; 35. Wedge-shaped groove. Detailed Implementation

[0025] To provide a clearer explanation and description of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are introduced below.

[0026] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of each embodiment. Specific details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures. The disclosures of various publications, patents, and published patent specifications cited herein are incorporated herein by reference in their entirety. The technical solutions of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0027] Example 1: This example provides a specific application scenario and assembly method for a composite energy-saving furnace lining in a white corundum smelting furnace. The base 11 of the furnace seat 1 is made of cast iron to ensure the stability of the overall structure. A motor 14 is installed on the right side of the upper surface of the base 11. The motor 14 is selected with a power appropriate for the working requirements of the smelting furnace, and its output shaft is connected to the access end of the rear bracket 13 of the furnace body through a coupling. The front bracket 12 and the rear bracket 13 of the furnace body are fixed on the left and right sides of the upper surface of the base 11, respectively. Both are made of high-temperature resistant alloy steel to ensure that they can withstand the high temperature and pressure during the smelting process. A rolling wheel is fixedly connected to the outer ring surface of the furnace chamber 21 of the smelting furnace mechanism 2. The rolling wheel is made of a high-temperature resistant and wear-resistant material, such as special alloy steel. The rolling wheel is mounted on the front bracket 12 and the rear bracket 13 of the furnace body, so that the furnace chamber 21 can roll under the drive of the motor 14. The front furnace cover 22 is fixed to the left end face of the furnace chamber 21 by bolts, and the rear pressure cover 23 is also fixed to the right end face of the furnace chamber 21 by bolts to ensure a tight connection and prevent leakage of high-temperature gas during the smelting process.

[0028] The furnace lining assembly consists of 10 composite energy-saving furnace liners 3. In each composite energy-saving furnace lining 3, the clay insulation ring 31 is made of high-quality clay material using a special process, exhibiting excellent insulation performance. The clay insulation rings 31 are in close contact with each other, and their outer ring surface is tightly coupled to the inner cavity sidewall of the furnace chamber 21, with the connection strength further enhanced by a high-temperature adhesive. The ceramic fiber ring 32 is connected to the inner cavity sidewall of the clay insulation ring 31 through a sintering process. The sintering process is carried out in a high-temperature furnace, with strict temperature and time control to ensure connection strength and stability. The inner sidewall of the ceramic fiber ring 32 and the inner cavity sidewall of the four linearly arrayed wedge-shaped grooves 35 are uniformly coated with a 0.4mm thick infrared reflective coating. This coating uses a special infrared reflective material, which effectively reflects radiant heat within the furnace, reducing heat loss. The wedge-shaped grooves 35 are interconnected, and their vertical cross-section is wavy. This design increases the furnace inner wall area, thereby increasing the heat exchange area and improving smelting efficiency. Nine convex cylinders 33 are fixed on the right end face of the ceramic fiber ring 32, and nine cylindrical grooves 34 arranged in a ring array are opened on the left end face. Adjacent composite energy-saving furnace liners 3 are coupled into the interior of the cylindrical grooves 34 through the insertion of the convex cylinders 33 to achieve a tight connection and ensure the overall stability of the furnace lining assembly.

[0029] Example 2: In this example, the base 11 of the smelting furnace base 1 is made of cast concrete with an internal steel reinforcement frame to enhance the overall load-bearing capacity. The motor 14 is a model with variable frequency speed control, which can adjust the speed according to the smelting process requirements, thereby controlling the rolling speed of the furnace chamber 21. The front support 12 and the rear support 13 of the furnace body are made of ceramic composite material, which is not only resistant to high temperatures but also has good corrosion resistance. The rolling wheel rings on the outer surface of the furnace chamber 21 of the smelting furnace mechanism 2 are made of graphite material, utilizing the self-lubricating properties of graphite to reduce frictional resistance during rolling. The front furnace cover 22 and the rear pressure cover 23 are connected to the furnace chamber 21 by welding to ensure high-temperature sealing of the connection parts.

[0030] The furnace lining assembly consists of eight composite energy-saving furnace liners 3. The clay insulation ring 31 is made of clay material with added special additives to improve its insulation effect and thermal shock resistance. The coupling between the clay insulation ring 31 and the inner wall of the furnace chamber 21 is achieved through a combination of mechanical snap-fit ​​and high-temperature adhesive, further enhancing the reliability of the connection. During the sintering process of the ceramic fiber ring 32 and the clay insulation ring 31, a small amount of rare earth elements is added to improve the performance of the ceramic fiber ring 32. The infrared reflective coating on the inner wall of the ceramic fiber ring 32 and the inner wall of the three wedge-shaped grooves 35 has a thickness of 0.3 mm. This coating uses nanoscale materials and has higher infrared reflectivity. The wavy design of the wedge-shaped grooves 35 is more complex, further increasing the heat exchange area. Eight convex cylinders 33 are fixed on the right end face of the ceramic fiber ring 32, and eight cylindrical grooves 34 are opened on the left end face. The connection between adjacent composite energy-saving furnace liners 3 adopts the method of elastic buckle and convex cylinders 33 and cylindrical grooves 34 to ensure tight connection and have a certain buffering effect to adapt to thermal expansion and contraction during the smelting process.

[0031] Example 3: In this example, the base 11 of the smelting furnace base 1 adopts a structure combining a steel frame and refractory bricks. The steel frame provides overall support, while the refractory bricks enhance the high-temperature resistance of the base 11. The motor 14 adopts a dual-motor drive mode, connected to the rear bracket 13 of the furnace body through a gear transmission mechanism, improving the stability and reliability of the drive. The front bracket 12 and the rear bracket 13 of the furnace body are made of silicon carbide, which has extremely high hardness and high-temperature resistance. The rolling wheel rings on the outer surface of the furnace chamber 21 of the smelting furnace mechanism 2 are made of metal-ceramic composite material, combining the strength of metal with the high-temperature resistance and wear resistance of ceramics. The connection between the front furnace cover 22 and the rear pressure cover 23 and the furnace chamber 21 adopts a quick-disassembly structure, facilitating rapid replacement and maintenance when needed.

[0032] The furnace lining assembly consists of 12 composite energy-saving furnace liners 3. The clay insulation ring 31 adopts a multi-layer composite structure, with an outer layer of ordinary clay and an inner layer of clay with added heat-insulating aerogel to improve insulation performance. The clay insulation ring 31 is bonded to the inner wall of the furnace chamber 21 using high-temperature ceramic adhesive, and a metal mesh reinforcement structure is set at the bonding area. Vacuum sintering technology is used in the sintering process of the ceramic fiber ring 32 and the clay insulation ring 31 to improve the density and strength of the ceramic fiber ring 32. The infrared reflective coating with a thickness of 0.5 mm is applied to the inner wall of the ceramic fiber ring 32 and the inner wall of the five wedge-shaped grooves 35. This coating adopts a multi-layer composite structure to further improve infrared reflective performance. The wavy design of the wedge-shaped grooves 35 has a special texture that guides airflow within the furnace and promotes heat exchange. Ten convex cylinders 33 are fixed to the right end face of the ceramic fiber ring 32, and ten cylindrical grooves 34 are opened on the left end face. The connection between adjacent composite energy-saving furnace liners 3 adopts a magnetic adsorption method in conjunction with the convex cylinders 33 and cylindrical grooves 34 to ensure a tight connection and prevent loosening under high temperature environment.

[0033] Based on the above-described preferred technical solution, the workflow of this technical solution is explained as follows: The motor 14 on the right side of the base 11 on the furnace seat 1 of the smelting furnace is started. The output shaft of the motor 14 transmits power to the access end of the rear support 13 of the furnace body through a coupling, causing the rear support 13 of the furnace body to rotate. Since the outer surface of the furnace chamber 21 of the smelting furnace mechanism 2 is fixedly connected with a rolling wheel ring, and the rolling wheel ring is mounted on the front support 12 and the rear support 13 of the furnace body, as the rear support 13 of the furnace body rotates, the furnace chamber 21 begins to roll on the front support 12 and the rear support 13 of the furnace body, providing a basis for uniform heating and material mixing in the subsequent smelting process. Before smelting begins, the white corundum raw material to be smelted is loaded into the furnace chamber 21 through the feeding port on the front furnace cover 22. Then the front furnace cover 22 is sealed to make it tightly fixed to the left end face of the furnace chamber 21. The rear cover 23 is also kept tightly fixed to the right end face of the furnace chamber 21 to prevent high-temperature gas leakage and external impurities from entering during the smelting process.

[0034] During the smelting process, the temperature inside the furnace 21 rises rapidly, and heat is transferred to the inner wall of the furnace 21. The composite energy-saving furnace lining 3 in the furnace lining assembly begins to function. The heat first comes into contact with the inner sidewall of the ceramic fiber ring 32 and the inner cavity sidewall of the 3-5 wedge-shaped grooves 35 arranged in a linear array on its inner sidewall. Because these parts are coated with an infrared reflective coating with a thickness of 0.3mm-0.5mm, the infrared reflective coating reflects the radiant heat inside the furnace, reflecting some of the heat back into the furnace 21, reducing heat loss into the furnace lining assembly, and playing a preliminary energy-saving and heat-insulating role. Some heat is transferred to the ceramic fiber ring 32 after passing through the infrared reflective coating. The ceramic fiber ring 32 itself has good heat insulation properties, which can further slow down the heat transfer rate. Meanwhile, the wedge-shaped grooves 35 on the inner sidewall of the ceramic fiber ring 32 are interconnected and their vertical cross-section is wavy. This special design increases the furnace wall area. When the high-temperature gas in the furnace comes into contact with the furnace wall, the heat exchange area is increased, so that the heat can be utilized more efficiently and promote the smelting reaction.

[0035] As heat continues to transfer into the furnace lining assembly, reaching the clay insulating rings 31, these rings are in close contact with each other, and their outer surfaces are tightly coupled to the inner wall of the furnace chamber 21. Thanks to their excellent insulation properties, the clay insulating rings 31 prevent further heat loss, retaining more heat within the furnace chamber 21 and maintaining a high-temperature environment to meet the temperature requirements for white fused alumina smelting. During the smelting process, the furnace chamber 21 continuously rotates, allowing the material inside to constantly tumble and fully contact the furnace wall, ensuring the uniformity of the smelting reaction. After smelting is complete, heating is stopped, and the furnace temperature gradually decreases. Once the temperature drops to a safe operating range, the rear pressure cap 23 is opened, and the smelted white fused alumina product is removed through the right side of the furnace chamber 21.

[0036] If maintenance or replacement of the composite energy-saving furnace lining 3 is required, 8-10 convex cylinders 33 arranged in a ring array with the axis of the ceramic fiber ring 32 as the base are fixed on the right end face of the ceramic fiber ring 32, and 8-10 cylindrical grooves 34 arranged in a ring array are opened on the left end face. Adjacent composite energy-saving furnace liners 3 are connected by inserting the convex cylinders 33 into the interior of the cylindrical grooves 34, and each composite energy-saving furnace lining 3 can be removed from the furnace chamber 21 in sequence. During removal, a suitable external force is applied using a special tool to overcome the friction between the convex cylinders 33 and the cylindrical grooves 34, and the composite energy-saving furnace lining 3 is separated. When installing a new composite energy-saving furnace lining 3, align the convex cylinders 33 and cylindrical grooves 34 of the adjacent composite energy-saving furnace lining 3, gently push them in to make them tightly coupled, and reassemble the furnace lining assembly to prepare for the next smelting.

[0037] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A composite energy-saving furnace lining for a white corundum smelting furnace, comprising a furnace base (1), characterized in that: A smelting furnace mechanism (2) is slidably provided on the top of the furnace base (1), and a furnace lining assembly is provided in the inner cavity of the smelting furnace mechanism (2). The furnace base (1) of the smelting furnace includes a base (11), an electric motor (14) fixedly connected to the right side of the upper surface of the base (11), and a furnace body front bracket (12) and a furnace body rear bracket (13) fixed to the left and right sides of the upper surface of the base (11). The smelting furnace mechanism (2) includes a furnace chamber (21), a front furnace cover (22) fixed to the left end face of the furnace chamber (21), and a rear pressure cover (23) fixed to the right end face of the furnace chamber (21). The furnace lining assembly comprises 8-12 composite energy-saving furnace linings (3), each of which includes a clay insulation ring (31), a ceramic fiber ring (32) fixedly connected to the inner cavity sidewall of the clay insulation ring (31), and 3-5 wedge-shaped grooves (35) arranged in a linear array on the inner sidewall of the ceramic fiber ring (32). The inner sidewall of the ceramic fiber ring (32) and the inner cavity sidewall of the wedge-shaped grooves (35) are coated with an infrared reflective coating of 0.3mm-0.5mm thickness.

2. The composite energy-saving furnace lining for a white corundum smelting furnace according to claim 1, characterized in that: The clay insulation rings (31) are in close contact with each other, and the outer surface of the clay insulation rings (31) is tightly coupled to the inner wall of the furnace (21).

3. The composite energy-saving furnace lining for a white corundum smelting furnace according to claim 1, characterized in that: The outer ring sidewall of the ceramic fiber ring (32) is connected to the inner cavity sidewall of the clay insulation ring (31) by a sintering process.

4. The composite energy-saving furnace lining for a white corundum smelting furnace according to claim 1, characterized in that: The wedge-shaped grooves (35) are interconnected, and the vertical cross-section of the wedge-shaped grooves (35) is wavy, which is used to increase the inner wall area of ​​the furnace to increase the heat exchange area.

5. The composite energy-saving furnace lining for a white fused alumina smelting furnace according to claim 1, characterized in that: Eight to ten convex cylinders (33) are fixed on the right end face of the ceramic fiber ring (32). The convex cylinders (33) are arranged in a ring array with the axis of the ceramic fiber ring (32) as the base point.

6. The composite energy-saving furnace lining for a white fused alumina smelting furnace according to claim 1, characterized in that: The ceramic fiber ring (32) has 8-10 cylindrical grooves (34) arranged in a ring array on its left end face, and the convex cylinder (33) is inserted and coupled into the interior of the cylindrical groove (34).

7. The composite energy-saving furnace lining for a white corundum smelting furnace according to claim 1, characterized in that: The output shaft of the motor (14) is connected to the access end of the rear bracket (13) of the furnace body via a coupling, and is used to drive the furnace (21) to rotate.

8. The composite energy-saving furnace lining for a white fused alumina smelting furnace according to claim 1, characterized in that: A rolling wheel is fixedly connected to the outer surface of the furnace chamber (21), and the rolling wheel is mounted on the front bracket (12) and the rear bracket (13) of the furnace body.

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